Zuoyan Qin created HAWQ-1769:
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Summary: fix DirectoryIterator of libhdfs
Key: HAWQ-1769
URL: https://issues.apache.org/jira/browse/HAWQ-1769
Project: Apache HAWQ
Issue Type: Bug
Components: libhdfs
Reporter: Zuoyan Qin
Assignee: Ruilong Huo
Fix For: 3.0.0.0
The DirectoryIterator of libhdfs has some problems now:
* even if the `getListing` RPC returns "remainingentries = 0", the following
invoking of DirectoryIterator::hasNext() may still trigger an *unnecessary*
`getListing` RPC to the server.
* moreover, in the above case, if the server returns a non-empty list (so it
is a server bug because the server should return an empty list) when the client
send an unnecessary `getListing` RPC, then DirectoryIterator::hasNext() will
return true, and we will enter endless loop.
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